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#ifndef BIOS_E820_H
#define BIOS_E820_H
#define SMAP 0x534d4150 /* ASCII "SMAP" */
#define E820_RAM 1
#define E820_RESERVED 2
#define E820_ACPI 3
#define E820_NVS 4
#define E820_UNUSABLE 5
/*
* reserved RAM used by kernel itself
* if CONFIG_INTEL_TXT is enabled, memory of this type will be
* included in the S3 integrity calculation and so should not include
* any memory that BIOS might alter over the S3 transition
*/
#define E820_RESERVED_KERN 128
struct e820entry {
uint64_t addr; /* start of memory segment */
uint64_t size; /* size of memory segment */
uint32_t type; /* type of memory segment */
} __attribute__((packed));
struct e820map {
uint32_t nr_map;
struct e820entry map[];
};
extern struct e820map *e820;
#define ISA_START_ADDRESS 0xa0000
#define ISA_END_ADDRESS 0x100000
#define BIOS_BEGIN 0x000a0000
#define BIOS_END 0x00100000
#define BIOS_ROM_BASE 0xffe00000
#define BIOS_ROM_END 0xffffffff
#endif /* BIOS_E820_H */
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